Not a bad review. I've read fruitier. I looked on WGC and I think the valve you got is for a Tokyo Marui M9. I know KJW make Marui and KSC clones so I think a high-flow valve for a KSC magazine is what you require. I'd reinstall the stock valve, gas it up and use the poor man's chronograph from Redwolf.
http://www.redwolfairsoft.com/redwol...il?bulletID=34